Answer:
B
Step-by-step explanation:
 
        
             
        
        
        
The answer is  communative. hope that helped
        
             
        
        
        
9 OK there you go
if you don't think this is correct then ask someone else
        
                    
             
        
        
        
Answer:
b
Step-by-step explanation:
 
        
             
        
        
        
2r + 2r + 5 + r + 4r - 3 = 38
9r + 5 - 3 = 38
9r + 2 = 38
9r = 38 - 2
9r = 36
9r/9 = 36/9
r = 4cm
Done!